Question

Place the notebook on a table, and push it a few inches with your finger. When it moves, it has kinetic energy. Which kind of force opposed the motion of the notebook?

Answer 1

The force of friction opposed the motion of the notebook.

Step-by-step explanation:

Plato answer

Answer 2

A frictional force (friction); which is a non-conservative force, as it dissipates the kinetic energy of the notebook through heat or/and deformation.